1. From the Cardiovascular Research Center and Department of Physiology (H.N., H.S., A.H., S.H., H.O., K.E., S.E.) and Department of Anatomy and Cell Biology (A.S.), Temple University School of Medicine, Philadelphia, Pa; the Department of Biochemistry (G.D.F., T.I.), Vanderbilt University School of Medicine, Nashville, Tenn; the Department of Craniofacial Biology, School of Dentistry, and Department Cell and Developmental Biology, School of Medicine (M.E.R.), University of Colorado Health Science...